"As it turns out, I have too many ideas at the moment for Mario games on Wii U. I'm going to have to start narrowing them down and thinking about which ideas might work well together so that the whole system will be an enjoyable experience rather than a hodgepodge of ideas." - Yoshiaki Koizumi, the director of Super Mario 3D Land
I don't know about you, but that makes it sound like there's not going to be a Mario title at Wii U launch. Then again, maybe a title in the style of NSMBW could happen. I wouldn't be surprised to see New Super Mario Bros. Mii fleshed out into a retail game.